Buffer overflow in Siemens En100 Ethernet Module
CVE-2019-13942
A vulnerability has been identified in EN100 Ethernet module DNP3 variant (All versions), EN100 Ethernet module IEC 61850 variant (All versions < V4.37), EN100 Ethernet module IEC104 variant (All versions), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module PROFINET IO variant (All versions). An unauthorized user could exploit a buffer overflow vulnerability in the webserver. Specially crafted packets sent could cause a Denial-of-Service condition and if certain conditions are met, the affected devices must be restarted manually to fully recover. At the time of advisory publication no public exploitation of this security vulnerability was known.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.019 (79.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.019 · newest: 0.019 · change: 0.000
Affected products
- Siemens En100 Ethernet Module
- Siemens En100 Ethernet Module With Firmware Variant Dnp3 Tcp
- Siemens En100 Ethernet Module With Firmware Variant Iec104
- Siemens En100 Ethernet Module With Firmware Variant Iec 61850
- Siemens En100 Ethernet Module With Firmware Variant Modbus Tcp
- Siemens En100 Ethernet Module With Firmware Variant Profinet Io
- Siemens Ag En100 Ethernet Module Dnp3 Variant — versions All versions
- Siemens Ag En100 Ethernet Module Iec104 Variant — versions All versions
- Siemens Ag En100 Ethernet Module Iec 61850 Variant — versions All versions < V4.37
- Siemens Ag En100 Ethernet Module Modbus Tcp Variant — versions All versions
Weakness classification (CWE)
References
- cert-portal.siemens.com/productcert/pdf/ssa-418979.pdf (Vendor Advisory)
- www.us-cert.gov/ics/advisories/icsa-19-344-07 (US Government Resource, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-13942?
- CVE-2019-13942 is a high-severity vulnerability in Siemens En100 Ethernet Module, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 7.5/10. Published 2019-12-12.
- How severe is CVE-2019-13942?
- High severity. CVSS v3 base score is 7.5 out of 10.